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## Package org.bouncycastle.asn1

A library for parsing and writing ASN.1 objects.

See:
Description

Interface Summary
ASN1BitStringParser | A basic parser for a BIT STRING object
ASN1Choice | Marker interface for CHOICE objects - if you implement this in a role your own object any attempt to tag the object implicitly will convert the tag to an explicit one as the encoding rules require.
ASN1Encodable | Basic interface to produce serialisers for ASN.1 encodings.
ASN1Encoding | Supported encoding formats.
ASN1ExternalParser | Parser DER EXTERNAL tagged objects.
ASN1OctetStringParser | A basic parser for an OCTET STRING object
ASN1SequenceParser | A basic parser for a SEQUENCE object
ASN1SetParser | A basic parser for a SET object
ASN1String | General interface implemented by ASN.1 STRING objects for extracting the content String.
ASN1TaggedObjectParser | Interface for the parsing of a generic tagged ASN.1 object.
BERTags |
InMemoryRepresentable | Interface implemented by objects that can be converted from streaming to in-memory objects.

Class Summary
ASN1Absent | An ASN1 class that encodes to nothing, used in the OER library to deal with the Optional type.
ASN1BitString | Base class for BIT STRING objects
ASN1BMPString | ASN.1 BMPString object encodes BMP (Basic Multilingual Plane) subset (aka UCS-2) of UNICODE (ISO 10646) characters in codepoints 0 to 65535.
ASN1Boolean | Public facade of ASN.1 Boolean data.
ASN1EncodableVector | Mutable class for building ASN.1 constructed objects such as SETs or SEQUENCEs.
ASN1Enumerated | Class representing the ASN.1 ENUMERATED type.
ASN1External | Class representing the DER-type External
ASN1GeneralizedTime | Base class representing the ASN.1 GeneralizedTime type.
ASN1GeneralString | ASN.1 GENERAL-STRING data type.
ASN1Generator | Basic class for streaming generators.
ASN1GraphicString |
ASN1IA5String | ASN.1 IA5String object - this is a ISO 646 (ASCII) string encoding code points 0 to 127.
ASN1InputStream | A general purpose ASN.1 decoder - note: this class differs from the others in that it returns null after it has read the last object in the stream.
ASN1Integer | Class representing the ASN.1 INTEGER type.
ASN1Null | A NULL object - use DERNull.INSTANCE for populating structures.
ASN1NumericString | NumericString object - this is an ascii string of characters {0,1,2,3,4,5,6,7,8,9, }.
ASN1Object | Base class for defining an ASN.1 object.
ASN1ObjectDescriptor |
ASN1ObjectIdentifier | Class representing the ASN.1 OBJECT IDENTIFIER type.
ASN1OctetString | Abstract base for the ASN.1 OCTET STRING data type This supports BER, and DER forms of the data.
ASN1OutputStream | Stream that produces output based on the default encoding for the passed in objects.
ASN1Primitive | Base class for ASN.1 primitive objects.
ASN1PrintableString | ASN.1 PrintableString object.
ASN1RelativeOID |
ASN1Sequence | ASN.1 SEQUENCE and SEQUENCE OF constructs.
ASN1Set | ASN.1 SET and SET OF constructs.
ASN1StreamParser | A parser for ASN.1 streams which also returns, where possible, parsers for the objects it encounters.
ASN1T61String | ASN.1 T61String (also the teletex string), try not to use this if you don't need to.
ASN1TaggedObject | ASN.1 TaggedObject - in ASN.1 notation this is any object preceded by a [n] where n is some number - these are assumed to follow the construction rules (as with sequences).
ASN1TimeFormatTest | White-box tests for `ASN1TimeFormat`, the strict structural validator for UTCTime / GeneralizedTime content.
ASN1UniversalString | ASN.1 UniversalString object - encodes UNICODE (ISO 10646) characters using 32-bit format.
ASN1UTCTime | - * UTC time object.
ASN1UTF8String |
ASN1Util |
ASN1VideotexString |
ASN1VisibleString | ASN.1 VisibleString object encoding ISO 646 (ASCII) character code points 32 to 126.
BERBitString |
BERBitStringParser | A parser for indefinite-length BIT STRINGs.
BERGenerator | Base class for generators for indefinite-length structures.
BEROctetString | ASN.1 OctetStrings, with indefinite length rules, and constructed form support.
BEROctetStringGenerator | A generator for indefinite-length OCTET STRINGs
BEROctetStringParser | A parser for indefinite-length OCTET STRINGs.
BERSequence | Indefinite length SEQUENCE of objects.
BERSequenceGenerator | A stream generator for DER SEQUENCEs
BERSequenceParser | Parser for indefinite-length SEQUENCEs.
BERSet | Indefinite length SET and SET OF constructs.
BERSetParser | Parser for indefinite-length SETs.
BERTaggedObject | BER TaggedObject - in ASN.1 notation this is any object preceded by a [n] where n is some number - these are assumed to follow the construction rules (as with sequences).
DERBitString | A BIT STRING with DER encoding - the first byte contains the count of padding bits included in the byte array's last byte.
DERBMPString | DER BMPString object encodes BMP (Basic Multilingual Plane) subset (aka UCS-2) of UNICODE (ISO 10646) characters in codepoints 0 to 65535.
DERExternal | Class representing the DER-type External
DERExternalParser | Parser DER EXTERNAL tagged objects.
DERGeneralizedTime | DER Generalized time object.
DERGeneralString | ASN.1 GENERAL-STRING data type.
DERGenerator | Basic class for streaming DER encoding generators.
DERGraphicString |
DERIA5String | DER IA5String object - this is a ISO 646 (ASCII) string encoding code points 0 to 127.
DERNull | An ASN.1 DER NULL object.
DERNumericString | DER NumericString object - this is an ascii string of characters {0,1,2,3,4,5,6,7,8,9, }.
DEROctetString | Carrier class for a DER encoding OCTET STRING
DEROctetStringParser | Parser for DER encoded OCTET STRINGS
DERPrintableString | DER PrintableString object.
DERSequence | Definite length SEQUENCE, encoding tells explicit number of bytes that the content of this sequence occupies.
DERSequenceGenerator | A stream generator for DER SEQUENCEs
DERSet | A DER encoded SET object For X.690 syntax rules, see `ASN1Set`.
DERT61String | DER T61String (also the teletex string), try not to use this if you don't need to.
DERTaggedObject | DER TaggedObject - in ASN.1 notation this is any object preceded by a [n] where n is some number - these are assumed to follow the construction rules (as with sequences).
DERUniversalString | DER UniversalString object - encodes UNICODE (ISO 10646) characters using 32-bit format.
DERUTCTime | DER UTC time object.
DERUTF8String | DER UTF8String object.
DERVideotexString |
DERVisibleString | DER VisibleString object encoding ISO 646 (ASCII) character code points 32 to 126.
DLBitString | A Definite length BIT STRING
DLBitStringParser | Parser for a DL encoded BIT STRING.
DLExternal | Class representing the Definite-Length-type External
DLGenerator | Base class for stream generators for definite-length structures.
DLOctetStringGenerator | A stream generator for definite-length (primitive) OCTET STRINGs.
DLSequence | The DLSequence encodes a SEQUENCE using definite length form.
DLSequenceGenerator | A stream generator for definite-length SEQUENCEs.
DLSequenceParser | Parser class for DL SEQUENCEs.
DLSet | The DLSet encodes ASN.1 SET value without element ordering, and always using definite length form.
DLSetParser | Parser class for DL SETs.
DLTaggedObject | Definite Length TaggedObject - in ASN.1 notation this is any object preceded by a [n] where n is some number - these are assumed to follow the construction rules (as with sequences).
LocaleUtil | ASN.1 uses an EN locale for its internal formatting.
OIDTokenizer | Deprecated. Will be removed

Exception Summary
ASN1Exception | Exception thrown in cases of corrupted or unexpected data in a stream.
ASN1ParsingException | Exception thrown when correctly encoded, but unexpected data is found in a stream while building an object.
DEREncodingException | Exception thrown when an ASN.1 primitive cannot be serialized as DER - typically because its in-memory contents do not satisfy the DER restrictions of X.690 (e.g. a UTCTime / GeneralizedTime parsed leniently from the wire that is then asked to round-trip through a ).

## Package org.bouncycastle.asn1 Description

A library for parsing and writing ASN.1 objects. Support is provided for DER and BER encoding.

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